// MIT License (MIT)
// 
// Copyright (c) 2014 K Ercan Turkarslan
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
// 

using System;
using System.Xml.Linq;
using CodeGen;
using CollectionsLibrary;

namespace MiosGenerator
{
    public class ActionArgument : CollectionItem
    {
        #region ReadOnly Property CamelCaseName
        private String _camelCase;

        public String CamelCaseName
        {
            get { return _camelCase ?? (_camelCase = CodeBlock.CamelCase(Name)); }
        }
        #endregion

        public Boolean IsOutParameter { get; private set; }
        public Boolean Optional { get; private set; }
        public StateVariable RelatedStateVariable { get; private set; }
        public UpnpDataType DataType { get; private set; }

        #region Constructors
        internal ActionArgument(XNode xNode, ItemsCollection<StateVariable> stateVariables)
            : base(xNode.GetValue("name"))
        {
            var direction = xNode.GetValue("direction");

            if ((direction != "out") && (direction != "in"))
                throw new ArgumentException("Unexpected value : Direction [{0}]", direction);

            IsOutParameter = direction == "out";

            Optional = (xNode.GetValue("optional") != null);

            var relatedStateVariable = xNode.GetValue("relatedStateVariable");
            if (!String.IsNullOrEmpty(relatedStateVariable))
            {
                RelatedStateVariable = stateVariables.GetByName(relatedStateVariable);
                if (RelatedStateVariable != null)
                {
                    DataType = RelatedStateVariable.DataType;
                    return;
                }

                if (UpnpDataType.IsUpnpType(relatedStateVariable))
                {
                    DataType = new UpnpDataType(relatedStateVariable);
                    return;
                }
            }
            else
            {
                relatedStateVariable = "EmptyVariable";
            }

            // We have found a reference to a state variable which was not defined!
            // This may be due to missing state variable or name of state variable 
            // might have been miss typed. This will be highlighted during code 
            // generation phase.

            var newStateVariable = new StateVariable(relatedStateVariable, "string");

            stateVariables.Add(newStateVariable, false);

            RelatedStateVariable = newStateVariable;
            DataType = new UpnpDataType("string");
        }

        internal ActionArgument(String name, String direction, Boolean optional, StateVariable stateVariable)
            : base(name)
        {
            IsOutParameter = direction == "out";

            Optional = optional;
            RelatedStateVariable = stateVariable;
            DataType = new UpnpDataType(stateVariable.DataType.Upnp);
        }

        #endregion        
    }
}